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156 Xanthippe (A875 WA)
Classification: Main-belt Asteroid          SPK-ID: 2000156
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 175 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2264775896037096 1.2034e-08  
a 2.72867939489318 8.0107e-09 au
q 2.110694662736464 3.4108e-08 au
i 9.77789659045594 3.5224e-07 deg
node 241.8238752261997 2.4205e-06 deg
peri 338.2822453277734 4.585e-06 deg
M 295.9060312618752 7.6235e-06 deg
tp 2459689.617573911710
(2022-Apr-20.11757391)
3.5671e-05 TDB
period 1646.369052903537
4.51
7.25e-06
1.985e-08
d
yr
n .2186630022989705 9.6291e-10 deg/d
Q 3.346664127049897 9.8249e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3838  
   data-arc span      43701 days (119.65 yr)  
   first obs. used      1901-09-19  
   last obs. used      2021-05-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40565  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 10:36:36  

Additional Information
 Earth MOID = 1.10604 au 
 Jupiter MOID = 1.6656 au 
 T_jup = 3.297 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 8.71   n/a E2021B10 IRAS observations used: 20
diameter diameter 143.346 km 0.903 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 22.132 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Debehogne, H.; De Sanctis, G.; Zappala, V. (1982) Astron. Astrophys. 108, 197-200.]
[Harris, A.W.; Young, J.W. (1989) Icarus 81, 314-364.]
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Pilcher, F. (2019) Minor Planet Bull. 46, 58-60.]
geometric albedo albedo 0.030   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.713   0.016 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=10; phase (min.=3.10, mean=10.52, max.=12.83) deg.
U-B UB 0.315   0.037 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=11; phase (min.=3.10, mean=9.86, max.=12.83) deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
SMASSII spectral type spec_B Ch   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

156 Xanthippe (A875 WA)          Discovered 1875-Nov-22 by Palisa, J. at Pola
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1952-Feb-22 05:01 < 00:01 Jupiter 1.73208060879749 1.73208018033779 1.73208103725808 2.09705535368324 1.8492162217298 2434064.709089910 0.866958084321344 78.5847354717947 13.7722801297075 -61.7693954132367 21064890.0041587 T 175 CATAB v2.0g-lin.ifort 2021-Jul-08 10:39:01 2021-Jul-08 10:39
1988-Aug-26 08:45 < 00:01 Jupiter 1.69261841367964 1.69261822414817 1.6926186032114 2.72470552005542 2.53439881032835 2447399.864640561 0.324443544355927 51.0012651170351 6.17406159417587 85.1245193854888 16873021.0215789 T 175 CATAB v2.0g-lin.ifort 2021-Jul-08 10:39:01 2021-Jul-08 10:39
2046-Oct-08 09:13 < 00:01 Jupiter 1.82881278428557 1.82881249523937 1.82881307333177 1.96274772240695 1.71057593080252 2468626.883709114 0.460227110291149 29.3566875447917 18.9683755126931 -45.8214722457399 17511396.9982096 T 175 CATAB v2.0g-lin.ifort 2021-Jul-08 10:39:01 2021-Jul-08 10:39
2083-Apr-23 09:34 < 00:01 Jupiter 1.65977374196352 1.65977362329374 1.65977386063425 2.63042148770798 2.4286763965326 2481972.898752125 0.868572927377334 140.87775227255 4.97830593771521 -89.1208671331475 24170112.0971644 T 175 CATAB v2.0g-lin.ifort 2021-Jul-08 10:39:01 2021-Jul-08 10:39
2119-Oct-26 13:09 00:01 Jupiter 1.89768403355154 1.89768292955754 1.89768513754598 3.02160815487044 2.87009147432326 2495307.047729336 1.421518911854 73.9308973184539 19.2427404544356 48.7811505283348 5493540.84219775 T 175 CATAB v2.0g-lin.ifort 2021-Jul-08 10:39:01 2021-Jul-08 10:39
2141-May-22 08:17 00:02 Jupiter 1.93705281716027 1.93705144956716 1.9370541847536 1.93707813068687 1.6963855744802 2503185.845056005 1.9200080577039 74.761447480001 17.285199485739 11.4458956275484 9140920.36053204 T 175 CATAB v2.0g-lin.ifort 2021-Jul-08 10:39:01 2021-Jul-08 10:39
2177-Dec-19 17:00 00:02 Jupiter 1.66445865677176 1.66445821276532 1.66445910079893 2.53591576019305 2.3266055477002 2516546.208467644 2.09995750988131 316.279919646894 5.54910533373816 -83.4567837112196 30263958.1075932 T 175 CATAB v2.0g-lin.ifort 2021-Jul-08 10:39:01 2021-Jul-08 10:39

Alternate Designations
 A875 WA = 1936 FG1 = 1942 RP = 1949 BN = A901 SA = A902 VA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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